Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Copper oxidation discoloration resistant agent and preparation method thereof

A discoloration agent and copper oxidation technology, applied in the field of metal corrosion protection, can solve the problems of chromate mutagenic cytogenetics, toxicity, carcinogenicity, etc., and achieve the effects of good anti-oxidative discoloration, simple process and environmental protection.

Inactive Publication Date: 2013-06-05
厦门金越电器有限公司
View PDF2 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the chromate passivation film has good corrosion resistance, chromium compounds are carcinogens, and studies have shown that chromium compounds have mutagenic effects and cytogenetic toxicity
The chromic acid required for the passivation film during the treatment process is negligible, and most of the input chromic anhydride is discharged into the surrounding environment, causing serious pollution

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Copper oxidation discoloration resistant agent and preparation method thereof
  • Copper oxidation discoloration resistant agent and preparation method thereof
  • Copper oxidation discoloration resistant agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Use deionized water as the solvent, and weigh each component according to the following ratio:

[0031] Benzotriazole 4g;

[0032] Thiourea 1g;

[0033] Sodium D-gluconate 1g;

[0034] Sodium lauryl sulfate 0.2g;

[0035] Ethanol 30mL;

[0036] (2) Dissolve 4g of benzotriazole in 30mL of ethanol to obtain solution 1;

[0037] (3) Dissolve 1g of thiourea in 200mL of deionized water to obtain solution 2;

[0038] (4) Dissolve 1g of sodium D-gluconate in 200mL of deionized water to obtain solution 3;

[0039] (5) After uniformly mixing the above solution 1, solution 2 and solution 3, add 0.2g of sodium lauryl sulfate, and use deionization to make the volume to 1L, keep stirring for 15 minutes, then let stand for 30 minutes and filter to obtain the obtained The anti-copper oxidation discoloration agent.

[0040] Heat the above-mentioned anti-copper oxidation and discoloration agent to 60°C, put the copper-plated parts into it and soak for 2 minutes, then take it ...

Embodiment 2

[0042] (1) Use deionized water as the solvent, and weigh each component according to the following ratio:

[0043] Benzotriazole 6g;

[0044] Thiourea 2g;

[0045] Sodium D-gluconate 2g;

[0046] Sodium lauryl sulfate 0.1g;

[0047] Ethanol 40mL;

[0048] (2) Dissolve 6g of benzotriazole in 40mL of ethanol to obtain solution 1;

[0049] (3) Dissolve 2g of thiourea in 200mL of deionized water to obtain solution 2;

[0050] (4) Dissolve 2g sodium D-gluconate in 100mL deionized water to obtain solution 3;

[0051] (5) After uniformly mixing the above solution 1, solution 2 and solution 3, add 0.1g of sodium lauryl sulfate, and use deionization to make the volume to 1L, keep stirring for 15 minutes, then let stand for 30 minutes and filter to obtain the obtained The anti-copper oxidation discoloration agent.

[0052] Heat the above-mentioned anti-copper oxidation and discoloration agent to 60°C, put the copper-plated parts into it and soak for 2 minutes, then take it out, w...

Embodiment 3

[0054] Dissolve 8 g of benzotriazole in 50 ml of ethanol to obtain solution 1, dissolve 3 g of thiourea in 200 ml of deionized water to obtain solution 2, dissolve 3 g of sodium D-gluconate in 100 ml of deionized water to obtain solution 3, and dissolve solution 1 , Solution 2 and Solution 3 were mixed evenly, and 0.3 g of sodium lauryl sulfate was added, and deionized water was added to make the volume to 1 L, and the final solution was stirred for 15 minutes and then allowed to stand for 30 minutes to obtain the required anti-copper discoloration agent product .

[0055] (1) Use deionized water as the solvent, and weigh each component according to the following ratio:

[0056] Benzotriazole 8g;

[0057] Thiourea 3g;

[0058] Sodium D-gluconate 3g;

[0059] Sodium lauryl sulfate 0.3g;

[0060] Ethanol 50mL;

[0061] (2) Dissolve 8g of benzotriazole in 50mL of ethanol to obtain solution 1;

[0062] (3) Dissolve 3g of thiourea in 200mL of deionized water to obtain solutio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a copper oxidation discoloration resistant agent and a preparation method thereof. Solvent of the copper oxidation discoloration resistant agent is water, one liter of the copper oxidation discoloration resistant agent comprises, by proportion, 4g-8g of benzotriazole, 1g-3g of thiocarbamide, 1g-3g of D-glucose acid sodium, 0.1g-0.3g of surface active agent and 30mL-50mL of organic cosolvent. According to the copper oxidation discoloration resistant agent, no toxic component is included, no toxic waste is discharged to environment in the processes of preparation and application, and thus environmental protection is benefited, the benzotriazole is used as a main component of a molecular self-assembly membrane, meanwhile, corrosion inhibitor thiourea and the D-glucose acid sodium are combined with the copper oxidation discoloration resistant agent to form a hydrophobic adsorption layer on the surface of a copper base material, and thus the copper base material is effectively isolated from outer corrosive environment, and a good copper oxidation discoloration resistant function is achieved.

Description

technical field [0001] The invention relates to the field of metal corrosion protection, in particular to an anti-copper oxidation discoloration agent and a preparation method thereof. Background technique [0002] Corrosion and discoloration of metal copper parts and electroplated copper parts is an important problem to be solved in the field of corrosion science. In the production of non-ferrous metals, the output of copper ranks second only to aluminum. In the electrochemical sequence, copper has a higher positive potential (+0.35VSHE) than hydrogen, so copper has high thermodynamic stability and will not depolarize hydrogen, and is listed as one of the corrosion-resistant metals. However, in high humidity and corrosive media (such as air containing sulfur dioxide, oxygen-containing water, oxidizing acids, and liquids containing CN-, NH4+, etc. that can form complex ions with copper), copper occurs more seriously. corrosion. For a long time, according to the corrosion ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/00
Inventor 李彦陈仙花吴凤兰章育枝
Owner 厦门金越电器有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com